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A Probabilistic Model of Redundancy in Information Extraction
Abstract
Unsupervised Information Extraction (UIE) is the task of extracting knowledge from text without using hand-tagged training examples. A fundamental problem for both UIE and supervised IE is assessing the probability that extracted information is correct. In massive corpora such as the Web, the same extraction is found repeatedly in different documents. How does this redundancy impact the probability of correctness? This paper introduces a combinatorial balls-andurns model that computes the impact of sample size, redundancy, and corroboration from multiple distinct extraction rules on the probability that an extraction is correct. We describe methods for estimating the model's parameters in practice and demonstrate experimentally that for UIE the model's log likelihoods are 15 times better, on average, than those obtained by Pointwise Mutual Information (PMI) and the noisy-or model used in previous work. For supervised IE, the model's performance is comparable to that of Support Vector Machines, and Logistic Regression.
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Cited by
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Carlson, A., Betteridge, J., Kisiel, B., Settles, B., Hruschka, E., & Mitchell, T. (2010) · Proceedings of the AAAI Conference on Artificial Intelligence · doi:10.1609/aaai.v24i1.7519 · Cited by 2,000
Open information extraction from the web
Etzioni, O., Banko, M., Soderland, S., & Weld, D. S. (2008) · Communications of the ACM · doi:10.1145/1409360.1409378 · Cited by 1,012
Self-citationSarawagi, S. (2008) · Foundations and Trends in Databases · doi:10.1561/1900000003 · Cited by 707
Autonomously semantifying wikipedia
Wu, F., & Weld, D. S. (2007) · Proceedings of the sixteenth ACM conference on Conference on information and knowledge management · doi:10.1145/1321440.1321449 · Cited by 375
Recovering semantics of tables on the web
Venetis, P., Halevy, A., Madhavan, J., Paşca, M., Shen, W., Wu, F., Miao, G., & Wu, C. (2011) · Proceedings of the VLDB Endowment · doi:10.14778/2002938.2002939 · Cited by 340
Metadata
- Authors
- Downey, D., Etzioni, O., & Soderland, S.
- Publisher
- Defense Technical Information Center
- Published
- 2006-01-01
- OpenAlex
- W157725869
- Cited by
- 175
- References
- 0
- Type
- report
- Language
- en
- Open access
- closed
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